Keystones — Lintel
Five GCSE retrieval questions · 20 July 2025 · mathsvault.uk/keystones
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1. Number
Calculate: 991 + 895
Answer: 1886 -
2. Algebra
Factorise fully: 6x² + 4x
Answer: 2x(3x + 2) -
3. Geometry
Adjacent = 29cm, hypotenuse = 47cm. Find the angle
Answer: 51.9° -
4. Ratio
Simplify the ratio 6m:600cm
Answer: 1:100 -
5. Statistics
A bag has 6 red and 3 blue balls. What is the probability of picking a red ball?
Answer: 2⁄3